Load handling mechanism



Feb. 5, 1946. LE GRAND H. LULL LOAD HANDLING MECHANISM Filed Dec. 27,1943 4 Sheets-Sheet 1 gjmm Le Gama H. Lou.

un g n Feb. 5, 1946.

LE GRAND H. LULL LOAD HANDLING MECHANISM Filed Dec. 27, 1943 4Sheets-Sheet 2 L:- Gnmon H. Luu.

Feb. 5, 1946.

LE GRAND H. LULL 051) HANDLING MECHANISM Filed Dec. 27., 1943 4Sheets-Sheet 5 7 LE GRAND H. Luu.

@214 CAM fl q Feb. 5, 1946. LE GRAND H. L'ULL 2,394,458

LOAD HANDLING MECHANISM I! Filed Bed. 27, 1943 4 Sheets-Sheet 4 Le 62AH. Luu.

32x4 @mYA/afL/ Patented Feb. 5, 1946 2,394,458 LOAD HANDLING MECHANISMLe Grand Lull, Minneapolis, Application December 27, 1943, Serial No.515,783

21 Claims.

This invention relates to improvements in load handling mechanism orloaders, supported and operated by an automotive vehicle such as atractor or truck.

The primary object of my invention is to provide a load lifting orhandling mechanism, of this nature, embodying an extensible tower orframe which permits of operation with low head room, and a load carrierso arranged that from a normal lowered position, a very high lift may beobtained by extending the tower upwardly and moving the load carrierupward to the uppermost end of the extended tower. Intermediate liftsare also readily obtainable and the mechanism will thus permit of workunder widely varying conditions.

Another object is to provide a lifting or loading mechanism, of thisnature; of extremely sturdy rigid and simple construction, with meansprovided to eliminate friction so far as possible at all points, andwith means for absorbing the horizontal thrust when the loader, in itslowered position is moved forward against or beneath the load to pickthe same up.

Another and important object is to provide in a load handling mechanismof this kind a novel, efiective and conveniently operative means forremoving and replacing the particular load carrier or device usedinconnection with the loader for supporting the load, thus facilitatingits use in connection with various kinds of work.

A further object is to provide a mechanism of this nature, with a noveland practical mounting and supporting arrangement for the load carrierwhich embodies means for tilting such carrier when required to keep theload in place as it is raised, and a means for dumping the load.

Still a further object of the invention is to provide a hydraulicallyoperated load handling mechanism, embodying one or more hydrauliccylinders, having novel mounting means permitting convenient removal forinspection or repair, and cables and pulleys arranged to elevate theparts of the mechanism with the maximum of mechanical advantage andminimum of lateral or horizontal stresses which would cause binding ofthe various parts.

These and other more detailed and specific objects will be disclosed inthe course of the following specification, reference being had to theaccompanying drawings, in which Fig. 1 is a side elevation of my loadhandling mechanism, or loader, as applied to a tractor showing themechanism used as a loader for lifting or loading material, with thematerial bucket shown in its lowered position. I

Fig. 2 is a horizontal, sectional and plan view along the line 22 inFig. 1.

Fig. 3 is an enlarged horizontal cross sectional view through the toweror frame of the loader.

Fig. 4 is a view similar to Fig. 1 but showing the parts in a partiallyelevated position.

Fig. 5 is an upright, longitudinal sectional view through theloader asshown in Fig. 4.

Fig. 6 is a frontal elevation of the loader as seen in Fig. 4, thematerial bucket and associated parts being removed.

Fig. '7 is a fragmentary frontal elevation of a lower part of the frameor tower, elevated somewhat beyond the position of Fig. 6, and showingthe use of two hydraulic cylinder'swhere added lifting capacity isdesired.

Referring now more particularly and by reference characters to thedrawings, Ihave shown my load handling mechanism as arranged inconnection with a conventional tractor A-which supports themechanism,'tra'nsports it, and by means of any conventional and suitablepump and valve assembly (not shown) provides fluid under pressure forhydraulically operating the mechanism. Obviously the mechanism may bemounted as well on any other type of automotive vehicle suitable to thepurpose.

The mechanism comprises a rigid, primary or inner frame or towerstructure, designated generally'at l0, comprising upright side membersII which are supported in transversely spaced and parallel relationshipat the front of the tractor by means of mounting beams 12. Said mountingbeams are secured rigidly at forward ends to the rear edges of the sidemembers I I, where they are further braced'and made rigid by gussetplates I3 and downwardly depending bracket plates l4, and the beamsextend rearwardly alongside the tractor to which they are secured in anyconvenient manner. The exact shape and mounting of the beams [2 will, ofcourse, vary according to the type of tractor or automotive prime powersource with which the loader is used. In any event the side members' l Imaking up the frame [0 are rigidly supported forward of the tractor andattention is called to the fact that the side members at lower endsterminate at, or above, the level of the' front axle B of the tractor,and of course forward of the front wheels C. The height of the frame [0will vary according to the height to which it is desired to lift theload but is such that the loader may operate in relatively confinedquarters where there is little head room, when the load is lowered, aswill pres ently appear.

The frame side members II are conveniently formed of channels as shown,with the hollows of the channels turned inwardly, and they are rigidlybraced by crossed braces l5 and by an upper cross member I6 and lowercross beam 11.

I also provide a secondary or outer movable frame, designated generallyat 18, and comprising upright side members l9 which are disposedparallel to and outside of the inner frame side members ll. These sidemembers l9 may be. formed of I-beams or. as here shown, by channelsplaced back to back and secured together to provide inner and outerupright channels or grooves 20 and 2|.

' The movable frame side members l9 are secured rigidly togetherby upperand lower' cross,

members 22 and 2-3, respectively, the upper cross member being secured,as by welding, to upper ends of the channels making up said side memit.might interfere bers, while the lower cross member 23, in the form of anangle as shown, is secured to and across forward sides of the sidemembers is with one flange, designated at 24, turned forwardly.

The movable frame I8 is guided for. up and down movements with respectto the rigid frame or -side plates 45 secured together in parallelreflanges 48.

stand in slightly spaced relation to the side I!) by means of flangedrollers 25 which are journailed in vertically spaced series on theoutersurfaces of each side member ll of the rigid frame l0. These rollers 25,turn on horizontal axes and are slightly tapered in an outwarddirection, as clearly shown, so that they will nicely fit the innerchannels in the side members IS. The rollers thus serve to guide theseside members l9 permitting friction free up and down movements thereof,while preventing forward-or rearward displacement. The flanges 26 of therollers are disposed in the spaces 21 provided between the side membersI i and I9 by the proper proportioning of the width of the respectiveframes l0 and I8. I I 3 For raising and lowering the movable frame It Iprovide one or more hydraulic cylinders, 28 into the lower end of whichfluid under pressure, re-

ceived from a pump (not shown) driven by. the tractor engine may beadmitted, as by means of a. line 29 shown in Fig. 5. A plunger 30slidably mounted in the cylinder 28 is projected upwardly therefrom bysuch admission of fluid, and atop this plunger 30 I provide aperipherally. grooved sheave orpulley 3| journaled in a bracket 32. A

cable 33 is secured at one end by a suitable clamp 34 to a plate 35aflixed to the center of the lower cross member 23 and is trainedupwardly over the pulley 3| and back downwardly to the rear, where. theother end of the cable is rigidly secured, asdesignated at 36 (Fig. 5),to a cross piece 31 secured rigidly between the sides of the frame I!)at an appropriate point. Obviously the upward movement of the plunger 30when fluid is admitted to the cylinder 28 will exert an upward pullonthe cable 33 such that the frame l8 will be pulled upward with respectto the rigid frame It), while the return of the fluid from the cylinderwill allow the frame 18 to descend of its own weight. A suitable valve:(also not shown) will tion the'carrierframe 44 willcome to rest at theof course be provided tocontrol the flow of fluid to and from thecylinder or cylinders to enable the frame to be raised and lowered atwill.

The cylinder 28 is provided at its lower closed end 38 with a downwardlyopening socket 39 and a seat member 40 is secured on the lower crossmember I! of the rigid frame to engage and enter said socket. This seatmember 4|lthus supports the cylinder 28 against all but upwarddisplacement. The upper end of the cylinder isengaged by a removableclamp ring 4| the out wardly turned ends 42 of which are bolted, as at43, to the cross member 31. It will be evident. therefore, that bymerely removing the clamp ring 4| and of course the cable 33, thecylinder 28 may-be readily lifted clear from its seatfor inspection orrepair.

Attention is called to the angular position, in thehorizontal plane, inwhich the pulley 3| is lation by upper and lower cross members 48 and 41in the form of angles having forwardly turned The sides 45 are so'spaced as to members I!) of themovable frame! and these sides carrytapered, flanged rollers 49 adjacent.

their upper and lower ends which enterand travel in the outer channels2lof said side members.

These rollers 49 thus will guide the carrier frame,

44 for upward and downward movements along the movable frame l8 whileholding the frames against relative forward and rearward displacement. 3To thus move the carrier frame 44 upwardlyand downwardly I provide atopthe movable frame I8 a pair of pulleys or sheaves 50 supported inbearing brackets 5| secured adjacent to the ends of the upper crossmember 22 and provided with hoods 52. A cable, designated generally at53, is attached near its center to and between a pair of loops 54secured to the upper cross member 46 of the carrier frame 44 and theends of this cable are then passedjupwardly in .parallel relation as at55, trained over the pulleys 50, and then passed downwardly insimilarparallel relation, as shown at 56, and attached to eyes 51secured near the ends of the upper cross member l6 of rigid frame H).The ends of the cable are then lapped and secured together as shownat58.

With this arrangement it will be evident that,

by properly proportioning the cable lengths, the

carrier frame .44 may be caused to descend to the lower end of. themovable frame 18 when the same is in its lowermost position. Then assaid movable frame I8 is moved upwardly, the pulleys 50 will pullupwardly on the cable 53 drawing the carrier frame upwardly alongthemovable frame I8. When the latter reaches its uppermost posiextremeupper end of the frame I 8.

A load carrying device or work holder, repre- I sented generally at 59,is removably mounted onthe carrier frame 44 and comprises a'rectangularattachment frame 59 havingupper. and lower portions 60 and GI spaced toflt nicely between the upper and lower cross members46 and 41 of thecarrier frame, the upper portion 60 lapping the underside of the upperflange 48 and the lower portion 61 overlapping the lower'flange'48. To

secure this attachment frame 59 in place I provide long, T-headed pins62 which are passed downwardly through openings 63 formed'in'the flanges48 and saidupper and lower portions-60* and 6| and which openingsregister when the partsare properly assembled. It will be apparent thatthe work holder may be readily removed when the pins 62 are grasped vand pulled upwardly. One pin is shown as partially removed in Fig. 6.

The attachment fra e 59 further. memes. sides 64 from the upper forwardcorners'of which 7 are extended mounting lugs 65. Side plates 66 arepivotally pinned at 6! at rear upper corners to these lugs 65 and arethus arranged to swing in upright planes at forward ends, these sideplates 68 being guided in such movements by bars 68 secured to the sides64 of the attachment frame 59 and slidably engaging the inner surfacesof the side plates. A material bucket 69 of conventional construction issupported by pivots I between the lower forward ends of the side plates66. These side plates are cut off angularly at forward ends as shown atII and at their upper forward corners carry latches I2 which upwardlyand forwardly engage latch pins 13 secured to the rear upper sides ofthe bucket 69. The latches I2 normally engage the pins 13 to hold thebucket in working position but when the latches are swung downwardly thepins are freed and the bucket may then, of its own weight, tilt aboutthe pivots 10 to dump its load, as indicated in Fig. 5.

The latches 12 are secured to and radially extended from a shaft M whichis journaled transversely through the side plates 66 and to operate thelatches in unison I provide a trip rope I5 which at one end is connectedto a trip lever I6 extending rearwardly from the shaft 14. This ropethen extends upwardly through a pulley 11 carried by an arm I8 on onepulley bracket 51 and back downwardly through another pulley I9 attachedto the upper cross member I6 of the rigid frame I0. The end 80 of therope is then extended rearwardly to a point convenient to the hand ofthe operator of the tractor. It will be understood that a pull upon theend 80 of the trip rope I5 will thus oscillate the latches 12 to releasethe material bucket 69 and allow it to dump its contents, and it willfurther be apparent that this rope, running over pulleys positionedrespectively at the same levels as the end of the cable 53 and itspulleys 50 will thus not be lengthened or shortencd by the upward anddownward movement of the parts so that accidental tripping andunlatching will be prevented.

I also provide means for tilting the material bucket as it is raised andsuch means comprises rollers 8| carried in. transversely spaced brackets82 affixed to a cross bar 83 which is suspended at its ends from hangers84 pivotally attached at upper ends by bolts 85 to the inner surface ofthe side plates 66. The rollers 8| are so located that they fallimmediately forward of the side members I9 making up the movable frameI8 (Fig. 2) and they may be swung forwardly or rearwardly, or toward andaway from said side members I9 by swinging the hangers 94 on its pivots85. Threaded studs 86 are attached to and extended forwardly from thecross bar 83 and passed loosely through apertured clips or bars 81secured to the side plates 66. Nuts 88 are screwed on the studs 86 bothforwardly and rearwardly of the clips 81 to adjustably lock the crossbar 83 against forward or"rearward movements'with respect to the sideplates.

The rollers 8| cooperate with upright guide bars 89 which are secured toforward sides of the side members I9 of the movable frame I8 and whichextend from near the lower ends of said side members to points neartheir upper ends. The lower ends of the guide bars are bevelled off asshown at 90. These lower ends of the guide bars 89 terminate at suchlevels that, when the carrier frame 44, and connected parts includingthe material bucket, are lowered (Fig. 1) the rollers 8| will fall belowthe bars but as the carrier frame ascends, in lifting the bucket, therollers will ride up on the guide bars as will be evident. By properlypositioning the rollers it will be equally evident that their engagementwith the guide bars 89 will urge the side plates 66 forwardly, swingingthem about their pivots 61 and tilting the forward end of the materialbucket upwardly, as clearly shown in Fig. 5. The degree to which thistilting is carried out may be varied by' adjusting the nuts 88 to movethe rollers 8| forwardly to reduce the tilt, and vice versa.

Such tilting of the bucket of course is an aid in holding its load inplace as it is raised and lowered, or transported in a raised position.

I When the parts are in their lowermost positions (Fig. 1) the movableframe I8, in order to lower the material bucket 69 to the ground, or toor below the level on which the tractor operates, will hang below thelower ends of the side members II making up the rigidframe I0. Tosupport the load then, and particularly to counteract the rearwardthrust when the bucket 69 is forced into the material to pick up a load,I provide a pair of thrust rollers 9| which are journaled upon a heavyshaft 92 supported transversely in and through the bracket plates I4.

.These rollers are so located that (Fig. 1) they will rearwardly'engagethe-side members I9 as they are lowered.

Where load conditionsrequire it, two lifting cylinders may be employedas shown in Fig. '7. In this view all frame parts are identical withthose previously described and are accordingly given the same referencenumerals. Two parallel cylinders 93and 94' are disposed on the crossmember I! and'similarly mounted'by seat members 40 thereon, the fluidbeing led to the lower ends of these cylinders through any suitableconnections such as indicated at 95. The cylinders 93 and 94 thus willoperate their plunger-s 96 and 91 in unison and the upper ends of theseplungers carry brackets 98 and 99 in which are journaled pulleys I00 andII. A cable, designated generally at I02, is secured by a middle pointto a plate I03 on the lower cross member 23 and has its ends extendedupwardly as at I04, trained over'the pulleys I00 and IIJI and thenpassed downwardly at I05 and secured at their extremities to the rigidframe II), as indicated at I06. The upward movements of the plung-ers 96and 91 in unison will thus pull upon both ends of the cable applying thefull lifting power of both cylinders to the movable frame. Here againthe pulleys I00 and IOI are angled in the horizontal plane to keep themclear of the movable frame and to best distribute the lifting force tothe center of the movable frame and prevent lateral binding effects.

It is believed that the operation of the mechanism as a whole will beunderstood from the f oregoing without further description. It will beunderstood that a high lift of the load may be secured or anintermediate lift and that the collapsible nature of the frames makes itpossible to operate with low head room where required. High clearance isalso provided when the load is lifted, by, the termination of the lowerends of the rigid parts at or near the level of the axle of the tractoritself as has been described;

The use of the removable pins 62 for connecting the load handling partsto the moving frames enables the convenient removal and replacement ofthe material bucket, as here shown, with other parts suitable for otherwork.

It is understood that suitable modifications ,may be made inthestructure as disclosed, pro- }vided such modifications come within thespirit and scope of the appended claims. ,therefore fullyillustrated'and described my, invention, what I claim to be new anddesire to Having now protect by Letters Patent is: Y

1. A load handling mechanism comprising, in

combination, a frame structure having side members, means for movingsaid side members up and down, a carrier frame mounted for up and downmovements along said side members, a load carry- I endsas the carryingdevice moves upwardly.

2-. A load handling mechanism comprising, in combination, a framestructure having side members, means for movingsaid side members up anddown, a carrier frame mounted for up and down movements alongsaid sidemembers, a load carrying device having side plates, the said side platesbeing pivotally attached to said carrier frame at upper corner portionsat pointsforwardly of the said side members for upand down movements attheir forward ends, upright guide bars on thesaid side members, andmeans associated with said load carrying device and located below saidpivotal attachments of the side plates to the carrier member forengagement with said guide bars to thereby swing the side platesupwardly at forward ends as the load carrying device moves upwardly.

3. In a load handling mechanism ofthe character described, a frameincluding Side members having upright channels at outer sides, a carrierframe arranged outside of said side members for up and down movementswith respect thereto, the said carrier frame having upright sidesdisposed along outersides of the channels in the said side members,rollers journaled adjacent upper and lower ends of each side of thecarrier frame in position for rolling engagement with the saidchannels,and load carrying means attached to said sides ofthe carrier frame.

4. A load handling mechanism comprising, in combination, a rigidlysupported frame including upright sides, a vertically movable frameincluding side members disposed outwardly of the said rigid frame, thesaid side members of the movable frame having upright channels on boththeir inher and their outer lateral surfaces, rollers carried by thesides of the rigid frame and operating in the inner channels of the sidemembers to support said movable frame for up and down movements withrespect to the rigid frame, a carrier frame having sides disposedoutwardly and laterally of the movable frame, and'rollers on saidcarrier frame sides operating in the outer channels of said side membersand supporting the carrier frame for up and down movements with respectto said movable frame.

,5. In a load carrying device, a rigid frame, a movable frameoperatively arranged for up and down movements with respect to saidrigid frame, aiload carrying means supported forwardly from said movableframasaid movable frame having I upright side members, and rollersdepended from and supported by the rigid frame for engaging the lowerrear portions of said side members when the movable frame is lowered.

,6. A load carrying mechanism for awheeled vehicle having a wheelsupported front axle,comprisingin combination, a rigid upright framesupportedat the forward end of the vehicle and terminating at its lowerend above the levelof said frontpaxle, a movable frame operatively I upaload when the, movable frame is lowered,

and means rigidly supported to engage the rear of the lower ends of theside members of said movable frame when it is lowered tothereby'absorb'the rearward thrust when the load is picked up. V, v

7. In a load handling mechanism of the-character described, a main framehaving a cross member, a movable frame arranged for up and downmovements with respect to said mainframe, and means for raising andlowering said movable frame, said means including at least onehydrausaid main frame, the lower .end of the cylinder lic cylindersupported in an upright position in having a socket, and a seat memberonsaid cross member of the main frame and adapted to enter said socketand support and center the cylinder.

8. In a load handling mechanism of the character described, a main framehaving a cross member, a movableframe arranged for-up and down movementswith respect. to said main frame, and means for raising and loweringsaid, movable frame, said means including at least one hydrauliccylindersupported in an upright position in said main frame, the lowerend ofv the cylinder having a socket, a seat member on said cross memberof the main frame and adapted to enter said socket and support'andcenter thecylinder, the saidmain frame having upright side portions,and a clamp member supported be,-

tween said .side portions and releasably engaging an upper end portionof said cylinder.

9. In a load handling mechanism of the character described, thecombination comprising, an upright rigid frame, a movable frameoperatively s pported for up and down movements alongside said rigidframe, a carrier means operatively supportedfor up and down movementsalong with and with respect to said movable frame, means for raising andlowering the movable frame and carrier means, avmaterial bucket tiltablysupportedfrom said carrier means, latch mechanism for releasably holdingsaid bucket against tilting,

and a trip rope for operating said latch mechanism, the said trip ropebeing connected at one end to said latch mechanism, passed upwardly withrunning engagement at the upper end of "the movable frame and then backdownwardly with'running engagement at the upper end of the rigid framein such manner as to overcome the tendency of theraising and lowering ofthe movable frame and carrier means toward lengthening and shorteningthe rope.

I 10. In a load handling mechanism of the character described, a workcarrier having upper and lower parallel supporting members, a workholder having upper and lower members disposable respectively below andabove thecorresponding upper and lower supporting members, the saidupper and lower members of both the carrier and holder having verticallyaligned openings, and

pins removably disposed downwardly through the said openings to securesaid work holder to the carrier.

11. A load handling mechanism, comprising in combination, an uprightframe, a load carrier member mounted for up and down movements along theframe and pivotally supported for swinging movements with respect to theframe, said frame having an upright guide surface terminating at a lowerend above the position assumed by said carrier member in its lowermostposition, and means carried by said carrier member for engagement withsaid guide surface as the member rises to swing said member about itspivotal support.

12. A load handling mechanism, comprising in combination, an uprightframe, a load carrier member mounted for up and down movements along theframe and pivotally supported for swinging movements with respect to theframe. said frame having an upright guide surface, a member carried bysaid carrier member for engaging said guide surface as the carriermember is raised and operative to tilt the carrier member about itspivotal support, and said engaging member being adjustably supported foradjustment toward and away from the guide surface.

13. A load handling mechanism for a wheeled frame, comprising an innerupright frame rigidly supported on the frame, an outer frame havingupright sides disposed outwardly of the inner frame and movable up anddown with respect thereto, a load carrier having portions overlappingouter sides of the outer frame and movable up and down with respectthereto, and means for raising and lowering the outer frame and carrier.

14. A load handling mechanism for a wheeled frame, comprising an innerupright frame rigidly supported on the frame, an outer frame havingupright sides disposed outwardly of the inner frame and movable up anddown with respect thereto, a load carrier having portions overlappingouter sides of the outer frame and movable up and down with respectthereto, cross braces between the sides of the inner frame, a top crossmember connecting the upper ends of the outer frame sides above theinner frame, a lower cross member connecting lower ends of the outerframe sides and disposed forwardly of the inner frame sides to clear thesame as the outer frame moves up and down, and means for raising andlowering the outer frame and carrier.

15. A load handling mechanism, comprising in combination, a rigidupright frame, a movable frame supported for up and down movements withrespect to the rigid frame, a load carrier supported on the movableframe for up and down movements with respect thereto, an operatingmember arranged on the rigid frame and carrying a pulley adapted to beraised and lowered. a cable connected at opposite ends to the rigid andmovable frames and trained intermediate its ends over said pulley,another pulley carried at the upper portion of the movable frame, andanother cable secured at its ends respectively to the load carrier andrigid frame and trained between its ends over the last mentioned pulley.

16. A load carrying mechanism for a vehicle having a wheel supportedaxle, comprising in combination, a rigid upright frame supported on thevehicle adjacent the axle and terminating at its lower end above saidaxle, a movable frame supported on the rigid frame and having sidemembers adapted to hang below the rigid frame in a lowered position ofthe movable frame, load carrying means supported on said movable frameand adapted to be forced into a load by movement of the vehicle whilesaid movable frame is lowered. and rollers rigidly supported to engagerear surfaces of the side members of the movable frame below said rigidframe to resist the thrust as the load carrying means is forced into theload.

17. In a load handling mechanism of the character described, a workcarrier having upper and lower parallel supporting members, a workholder having upper and lower members disposable in overlappingengagement with the said upper and lower supporting members, saidmembers having openings which register when they are overlapped, andpins removably disposed in said openings to detachably secure thecarrier and holder in assembled relation.

18. A load handling mechanism comprising, in combination, a framestructure having side members, means for moving said side members up anddown, a carrier frame mounted for up and down movements along said sidemembers, a load carrying device having side plates, the said side platesbeing pivotally attached to said carrier frame and forwardly of saidside members, guide bars supported on the frame structure, and rollersoperatively connected to said side plates and cooperating with saidguide bars to tilt the side plates and load carrying device upwardly atforward ends as they move upwardly.

19. In a load handling mechanism, a rigidly supported frame havingrollers at its sides. a movable frame having means forming uprightchannels to receive said rollers and support the movable frame for upand down movements with respect to and alongside the rigid frame, saidmovable frame also having'other means forming channels substantiallyparallel with the first men tioned channels, and a load carrier havingrollers positioned in the second mentioned channels and supporting thecarrier for up and down movements with respect to the movable frame.

2,0. In a load carrying device, a rigid frame, a movable frameoperatively arranged for up and down movements with respect to saidrigid frame, a load carrying means supported forwardly from said movableframe, said movable frame having side portions, and at least one rollersupported below the rigid frame and adapted to forwardly engage the sideportions of the movable frame when it is lowered.

21. A load carrying mechanism for a wheeled vehicle having a wheelsupported front axle. comprising in combination, a rigid upright framesupported at the forward end of the vehicle and terminating at its lowerend above the level of said front axle, a movable frame operativelyarranged for up and down movements with respect to said rigid frame andhaving a portion adapted to hang below the rigid frame when the movableframe is lowered, load carrying means supported from said movable frameand adapted when that frame is lowered to be moved forward to pick up aload, and means rigidly supported to engage said hanging portion of themovable frame when it is lowered to absorb the rearward thrust when theload is picked up.

LE GRAND H. LUL L.

